IF qe queue a new PDU to an empty outqueue then the mt service thread
will still be stuck in poll() until it timesout or the socket becomes
readable.
Fix this by sending SIGUSR1 to the service thread when we queue a PDU
to an empty queue. This will break out of poll() and we can immediately
go and write to the socket.
Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
This is the basic support for doing i/o in a separate worker thread.
It is still not threads safe but a start.
Now we need to protect all variables such as outqueue, waitpdu
and friends.
Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Add an abstraction for mutexts and threads
that handles both pthread api and native win32 api
Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
